Which reason most likely explains why some species survive mass extinctions on earth? a a broad range of species existed b dominant species mutated very slowly c several species filled the identical niche d a powerful species had a wide variety of characteristics

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables

Which tool could you see a plant cell? a. a filter b. a microscope c. a microwave d. an electromagnet

Which of th following is needed for cellular respiration to occur